Upper-crossed syndrome (UCS) is a condition of muscular imbalance that impacts the upper body, primarily the neck, shoulders, and upper back. It is also referred to as proximal or shoulder girdle crossed syndrome, and it arises due to inequity between the tautness and feebleness of specific muscle groups. Joint dysfunction is caused by this pattern of imbalance, especially at the T4-T5 segment, atlanto-occipital joint, C4-C5 segment, cervicothoracic joint, and glenohumeral joint. According to Janda, these core areas of stress in the spine complies to transitional zones where the morphology of nearby vertebrae changes. What causes UCS? Poor posture is the main contributor to UCS. Long periods of time spent driving, using a computer, or sitting at a desk cause people to slump forward, which can cause their shoulders to round and their neck to protrude forward. The upper trapezius, levator scapula, pectoralis major, and minor muscles are overworked and strained as a result of this post...